About This Lesson
I read CCSS 6.R.1 example wings to beak as 2:1 extend to arms to body\ies of the whole class. With more time, teacher also can ask fingers to arms (5:1) or fingers to bodies (10:1)
If taught at elem level, remind them to find out fast way to sum the total. If there are four 4-people groups and two 6-people groups, how they sum the number of total arms or total bodies? Remind students they do not need to always add for total number. They can also use multiplication for the total
